Monterres, Mexico—It was July 2016, and a US law enforcement official said it was now clear that the shooter in a school shooting rampage in Mexico City had been a citizen.
The official said the gunman was a citizen of the United States, a country that had been under intense scrutiny since the massacre of 49 people in a church in Sutherland Springs, Texas, in 2016.
But the official spoke to The Verge on condition of anonymity because of the ongoing investigation.
The official said that the gunman, who had spent some time in prison and was considered armed and dangerous, was a 29-year-old US citizen who had traveled to Mexico from Mexico City.
The gunman’s passport was not turned in during the investigation, but officials found no reason to question it, the official said.
Monterrey, Mexico is a small city with a population of just under 4,000.
Its capital, Monterre, is on the Pacific coast, a few hours north of San Francisco.
The city is known for its rugged terrain and its traditional Mayan culture.
The country’s capital, Mexico City, is about an hour’s drive from Monterríne.
The US State Department issued a statement on Friday saying it was “aware of the information regarding the shooter” and that the department is working to provide “any information that may assist in this investigation.”
Mexico’s National Institute of Anthropology and History said on its Twitter feed that it was monitoring the investigation and that it would “provide any information to the authorities” that might help “bring this case to justice.”
The institute is part of the Mexican Academy of Sciences.
Montevideo is a popular tourist destination for Mexicans and tourists from all over the world.
The massacre at the Monterry, the nation’s second-largest city, has prompted international calls for stricter gun laws and an increase in gun restrictions.
On Thursday, the country’s president, Enrique Pena Nieto, signed into law a law that allows anyone to carry a gun in public.
Pena Nieto said on Twitter on Thursday that the law will be enforced by “armed vigilantes,” who will be able to carry weapons without being formally vetted by police.
Puerto Rico, which has a similar population size as Monterrie, has also been hit by several mass shootings in recent years, including the 2015 attack that killed 43 people at a high school in the small city of San Juan.
The shooting at the high school was the deadliest mass shooting in Puerto Rico’s history, and the governor of the island said on Thursday he would not resign and called for more police officers to be stationed in the city.